Dockerized-webapp-flask-bgcolor

This is a simple flask webapp that displays a colored background and a dynamic greeting message.

Dynamic Color

The color can be specified in two different ways:

1. As a command line argument with --color as the argument. Accepts one of the following colors according the list below.
2. As an Environment variable APP_COLOR. Accepts one of the following colors according the list below.

In any other case, a random color is picked from the list below.

Note 1: Accepted colors ["red", "green", "blue", "olive", "purple", "navy"]
Note 2: Command line argument precedes over environment variable.

Dynamic Title

The dynamic greeting message can be specified in two different ways:

1. As a command line argument with --title as the argument. Accepts any text message!
2. As an Environment variable APP_TITLE. Accepts any text message.

In any other case, the static text "Cloud Computing - University of West Attica" is applied.

Note 3: Command line argument precedes over environment variable.

Follow these steps in order to create your Dockerized-webapp-flask-bgcolor

1. First of all you have to clone this repository on your server.

    -$ mkdir -p ~/MyProjects
    -$ cd ~/MyProjects
    -$ git clone https://github.com/gregkoul/Dockerized-webapp-flask-bgcolor.git
                      OR via SSH
    -$ git clone git@github.com:gregkoul/Dockerized-webapp-flask-bgcolor.git

2. Now you have to build the Docker Image locally.

    -$ cd ~/MyProjects/Dockerized-webapp-flask-bgcolor
    -$ docker build . -t gregkoul/webapp-flask-bgcolor:2.0

3. Now you have to spin up as many containers you want in different ports.

Random color and Static title without any command line argument nor environmental variable.

    -$ docker run -p 8002:8000 gregkoul/webapp-flask-bgcolor:2.0

Blue color with environmental variable and the Static title:

    -$ docker run -p 8000:8000 -e APP_COLOR=blue gregkoul/webapp-flask-bgcolor:2.0

Navy color with command line argument and the static title:

    -$ docker run -p 8001:8000 gregkoul/webapp-flask-bgcolor:2.0 --color=navy

Red color and Dynamic title with environmental variables:

    -$ docker run -p 8003:8000 -e APP_COLOR=red -e APP_TITLE="Test Title" gregkoul/webapp-flask-bgcolor:2.0

Olive color and Dynamic title with command line arguments:

    -$ docker run -p 8004:8000 gregkoul/webapp-flask-bgcolor:2.0 --color=navy --title="Test Title"